Can't connect RStudio with Github through SSH

I'm trying to connect my Rstudio with Git and Github,
but in the GIT/SVN options
the Git executable and the SVN executable are everything OK
BUT in the SSH RSA Key
I cannot change the default PATH

Although I have created my private and public key
that is another PATH different that the default folder.

How can I change the default folder for the SSH RSA key?

Did you configured git and managed to connect with git bash without RStudio?
I think this should work afterwards in Rstudio.

Yes, I was able to connect my Git and Github, but the default PATH to the SSH (in Rstudio) is a another folder. I have followed step by step Jenny Bryan tutorial on how to connect.
But this bug in particular, I do not find the way to solve it.